4) create reference DER
oj
H
.
= 3.0 Sv/h in the point coinciding with the geometric center
of the detector and irradiate the instrument;
5) in 600 s after the beginning of irradiation take five the dosimeter’s readings at intervals of
not less than 60 s
ji
H
.
and calculate the average value
j
H
.
, by formula
5
1
..
5
1
i
jij
HH (5.2)
6) repeat measurements for the points where DER
oj
H
.
is equal to 8.0 80.0; 800 µSv/h;
7) create DER
oj
H
.
equal to 8.0 mSv/h in the point coinciding with the detector geometric center;
8) irradiate the instrument;
9) in 120 s after the beginning of irradiation take five readings
ji
H
.
at intervals of 30 s.
Calculate the average value by formula (5.2);
10) repeat measurements for the point where the DER
oj
H
.
is equal to 80.0, 800.0 mSv/h;
8.00 Sv/h;
11) calculate the measurement error Qj by formula
%100
.
...
oj
ojbj
j
H
HHH
Q
, (5.3)
where
oj
H
.
– reference DER value at the check point;
j
H
.
– average DER value at the check point;
b
H
.
– average -background DER value;
12) calculate the error confidence limit of the dosimeter δ, %, with the confidence probability
0.95 under test by formula
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